/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.optimizer.core.rel.dal;

import org.apache.calcite.rel.dal.Dal;
import org.apache.calcite.sql.SqlBaseline;

public class LogicalBaseline extends LogicalDal {

    private LogicalBaseline(Dal dal){
        super(dal, "", "", null);
    }

    public static LogicalBaseline create(Dal dal) {
        assert dal.getAst() instanceof SqlBaseline;
        return new LogicalBaseline(dal);
    }

    public SqlBaseline getSqlBaseline() {
        return (SqlBaseline) getNativeSqlNode();
    }

    @Override
    protected String getExplainName() {
        return "LogicalBaseline";
    }
}

